Shifting shuttle box loom



May 5, 1931. c. D. BROWN 1,804,359

SHIFTING SHUTTLE Box LOOM Filed Aug. 6. 1928 4 Sheets-Sheet 1 Inverncn'.v Car! D. Brown a by uvw Mum 1:

A1 iys.

May 5, 1931. c, D, WN 1,804,369

- SHIF'I'ING SHUTTLE BOX LIQOM Filed Aug. 6, 1928 4 Shets-Sheet 2 Fig. 2.

Invemor. Carl D. Brown bym wkm AT 1Y5.

May 5, 1931. c, D, BROWN 1,804,369'

SHIFTING SHUTTLE BOX LOOM Filed Aug. 6. 1928 4 Sheets-Sheet 4 Fig.6,

' Inventor. Carl D. Brown, byJQZMM/J W j-ys. k

Patented Mayfi, 1931 UNETEEE rarest QFFICE oAnL 1). BROWN, or I-IOPEDALE, MAssAor-wsn'ra's, AssreNon o DRAPER CORPORA- TION, or nornnnrn, MASSACHUSETTS, a CORPORATION or" MAINE snrrrrns SHUTTLE ox LOOM This invention relates primarily to a shifting shuttle boX loom, more particularly designed for use in the weaving of rayon, silk and similar fabrics.

i One object of the invention is to provide a simple and efficient principle of construction for shifting transversely a plurality of shuttle boXes at the end of the lay to bring either into alignment with the lay.

Another object of the invention is to pro vide a picking mechanism in which absolute rectilinear movement of the shuttle across the lay is insured and in which the shuttle is picked in a right line parallel with the raceway.

Another object of the invention 1s to provide a picking mechanism employing a single picker stick with means for shifting the picker stick into cooperation with the actlve shuttle and out of cooperation with the inactive shuttle whenever a shift of the shuttle boxes occurs.

Another object of the invention is to provide a practical form of transversely, shifting shuttle boxes adapted to cooperate with a filling.replenishing mechanism of the wellknown Northrop type. r

These and other objects and features of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims. V

The drawings illustrate a preferred form of the invention as applied to a two-shuttle loom particularly designed for weaving rayon fabrics. As the invention relates only to certain features of the loom and as the other features making up the loom maybe of various forms well known to those skilled in the art, it is only necessary to illustrate so much of a loom as is necessary to a disclosure of the present invention.

Tn the drawings: Fig. 1 is a view in front elevation, par tially in vertical cross section and partially broken away, of the right-hand or shifting shuttle box end of the loom showing a pre ferred form of the" invention embodied therein.

Fig. 2 is a side elevation, partially in vertical cross section and partially broken away, of the construction shown in Fig. 1

Fig. 3 is a view in general similar to Fig. 2, butshowing'the parts in a different position.

tisa detail in horizontal cross section on the line 44 of Fig.3.

Fig. 5 is a detail in end elevation. and partially in cross section of a give-way connec-, tionkin the mechanism for shifting the picker s 1c Fig. 6 is a top plan view showing the, ad- ].acent ends of the main and box lay sections.

Fig. 7 is a detail of a portion of the con-- struction shown in Fig; 6 takenin vertical filiioss section through the middle of the shuttle roat.

Fig. 8 is a view of a portion of the con.

struction of Fig. 6 taken in horizontal cross section;

The loom, including the frame, the righthand side member 1 of which is illustrated, the lay rock shaft 2 carrying the lay sup porting swords 3, the reed 4, the crank shaft 5 with its cranks 6, the pitmen, one of which is shown at 7, the shaft 8 operating the pick motion, are in general of any ordinary and usual construction and the loom is also provided with the other usual features and adjunctive devices necessary to its operation and which may be of varioustypes familiar to those skilled in the art.

In the construction illustrated, the lay presents a main section 9 supported in 'the' usual manner by the swords 3 and-given its usual swinging movement from the pitmen 7. The raceway 10 for theactive shuttle extends across the loom on the top face of this main lay section. At the right-hand end the lay also presents a transversely shiftable box section 11, which carries aplurality of shuttle boxes herein shown as two in number. These boxes are formed by a central member 12 which forms one wall of each box and by the outer wall members 13 and 14 equipped with.

suitable binders 15 and 16, respectively. This box lay section is supported from and swings both with, and with respect to, the layrock shaft 2. This box lay section is also held in close contact with the main lay section both Boo when it moves with the main lay section and when it moves with respect thereto for shifting the shuttles. The construction is such that the shuttle boxes are shifted transversely so that the shuttles 17 and 18 are located with their open sides at the top and bottom, thus enabling filling replenishment to be effected by means such as is employed'in the wellknown Northrop loom. The box lay section is accurately supported and guided in its shifting movement with each box at all times in parallelism with the raceway. In addition, the picking mechanism operates upon a principle which ensures each shuttle being moved in vertical parallelism with the raceway. Thus any danger of marking,or injuring line f brics such as rayon by the umping of the shuttle when picked from its box or during its passage across the lay is eliminated.

In the preferred construction illustrated for securing these results, the boxlay section is supported by an auxiliary sword carried by the usual shoe on the end of the lay rock shaft. This shoe 19, instead of being made fast to the lay rock shaft 2, is journalled thereon between the hub 20 secured to the shaft 2 by a set screw 21, and a collar 22 secured to the shaft by a set screw 23. A bracket arm 24 extends upward from the shoe 19 and the main body member 25 of the auxiliary sword which is centrally ofiset to avoid the pick motion, is adjustably secured at its lower end to this bracket arm, first, by a bolt 26 passing laterally therethrough and, second, by a set screw 27 extending vertically through a lug 28 on the member 25 and abutting the upper end of the arm 24. This set screw may be adjusted and held in adjusted position by the lock nut 29. At its upper end the auxiliary sword member 25 is similarly adjustably connected by the bolt 30 and set screw 31 to a vertical flange 32 extending down from the inner end of the lay box section 11.

The accurate alignment of the main and box lay sections 9 and 11 at all times results from the fact that each is provided with extended smooth abut ing faces and that means are provided which extend through and hold these abutting faces in contact, while at the same time permitting the necessary shifting movement. For this purpose the main lay section is shown as provided with flanged brackets 33 at the front and 34 at the rear secured in place by the bolts 3?. The flanges and 37 present the end of the mainlay section an extended smooth vertical face. The end of the box lay section with the depending and extending fl nge 32 presents an oppositely disposed vertical smooth face and these two faces, the one on the main lay section and the other on the box lay section, abut each other, thus serving to guide the box lay section in its shifting movement. These abutting faces are held in contact, first, by a bolt 38 secured in the flange 32 of the box lay section at the front and passing through an arcuate slot 39 in the flange 36 with its center of curva nre at the axis of the lay rock shaft 2, and, second, bya bolt l0 at the rear, t :e const *uction and operation of which will later be described.

Any suitable mechanism may be employed for effecting the transverse shift of the box lay section with respect to the main lay section to bring either shu tie into action at pre determined times and maintain it in action during predetermined periods. With the simple form of the invention here illustrated, the shuttles ar shifted at regular intervals and remain in action for regular periods and it issuliicient, therefore, to illustrate a cam mechanism for shifting the box lay section and retaining it in shifted position, but this mechanism. is only illustrative.

In the form thus illustrated, the box lay c ion is directly shifted by a bell crank lever fmcrumed ll on a lug 42 projecting rearwardiy from the main lay section. This bel., crank lever comprises a downwardy extending arm 13 and a rearwardly extending arm ll. The arm d3 carries at its lower end the bolt 40,alreadydescribcd,which swings through an arcuate slot 15 in the on'the end of the main lay section, this slot l5 having its center of curvature at the f. m axis 421. This bolt carries a slide '0 sliding in a vertical way in the flange 3 the box lay section. Thus it will be seen that as the bell crank lever 43 and M is rocked, the box lay section will be shifted and that by holding the bell. crank lever in fixed position with respect to the main lay section, the box lay section will also be held in fixed relation to the main lay section.

In the construction illustrated, this bell crank lever is controlled by a cam member which is bodily shifted to rock the bell crank lever and thus shift the box lay section relatively to the main lay section and which in either position holds the bell crank lever against rocking movement with respect to the main lay section during the swing of the lay. This cam member is shown as a slide plate 4'? provided with a cam groove :8 having the walls 49 and 50. The plate 47 is mounted to slide vertically in ways 51 secured to the loom frame. The arm 44 of the bell crank lever is provided at its end with a roller follower 52 riding in the groove 48.

The cam member 47, in the construction illustrated, is shifted and retained in position by a cam conveniently driven from the shaft 8 carrying the pick cam. This shaft 8 shown as carrying a pinion 53 meshing with a gear 5 ljournalled at 55 on the loom frame. A cam groove 56 is cut in the face of the gear 54L and is here shown illustratively as of a form which will shift the box lay secof a rib 62 on the cam member 4'? and is se cured thereto by a give-way connection shown in detail in Fig. A plunger 63 is mounted to slide transversely in a horizontal rib 64 on the cam member 4C7 and is pressed inwardly by a spring 65. This plunger has a bevelled nose 66 fitting a recess in the side of the rod 58. Normally, therefore, the cam membere? is locked to the riser and thus controlled in its movement and position by the cam groove 56, but if a shuttle is not properly boxed or anything happens to hold the box lay section against shif ing movement when required, a smash or breakage will be pre vented by this give-way connection.

In the control of the box lay section with the mechanism illustrated, the non-circular portions of the cam groove 56 act to give the shifting movement by raising or lowering the cam member 4? and thus rock'ng the bell crank lever 44, 48 from one extreme position to the other. The box lay section is held in fixed position with respect to the main lay section after each shift because the follower 61 then rides in one or the other of the circular portions of the cam groove 56, thus holding the cam member 4-7 in fixed position, while the cam groove i8 is so constructed as to prevent any rocking movement of the bell crank lever 4411, 43 during the swing of the lay when the cam member 47 is in fixed position. This result is secured by making that wall of the cam groove 48 against which the follower 52 rides concentric with the axis of the lay rock shaft 2 about which the main and box lay sections swing. in 2 the parts are shown at the conclusion of the shift of the box lay section to render the shuttle 18 active with the cam member ll in its lowermost position. With the lay swinging with the parts in this position. the follower roll 52 will ride against the wall 49 of the groove 58 and this wall when irv this position is concentric with tea axis of the rock shaft 2. In Fig. 3 the parts shown with the box lay section shifted to render the shuttle 17 active. Consequently the cam member l? is in its upper position and the follower roll 52 rides against the wall and this wall in this position is consequently madeconcentric with theaxis of the rock shaft 2.

In the construction thus illustrated as a prefe red embodiment of the invention, it

will lie seen that the box lay section throughout its shifting movement is held by reason of the extended opposed contacting end faces and the connecting sliding bolts in accurate alignment with the main lay sectionand that each shuttle box at the end of the shift is brought into and maintained in an accurate alignment with the raceway of the main lay section. in the preferred construction, there is a single shuttle guiding threat at the end of the main lay section directing the shuttle into whichever of the shuttle boxes is in alignment with the raceway. This threat is shown as comprising a downwardly in clined upper wal 67 covered with a suitable leather facing 68 and front and rear walls 69 and 70 by which the shuttle is guidedinto the aligned shuttle box at the conclusion of the pick.

The mechanism for picking the active shuttle of this invention is designed to insure ab solute rectilinear movement of the shuttle parallel with the raceway and to prevent anv deflection of the shuttle '1 This is particularly important in connection with the weaving of rayon and silk fabrics which are frequently injured by the shuttle being projected slightly upward by the pick er mechanism. The invention in its preferred form provides a picker for each shuttle box accurately guided in parallelism with the raceway and a single picker stick shifted required into engagement with the picker of the active shuttle and out of engagement with the picker of the inactive shuttle and in the preferred form of the invention, the shifting movement of the picker stick from one picker to another is controlled by the relative inovement between the main and box lay sections.

A simple and preferred form of picker mechanism embodying these and other features of the invention is illustrated applied to the shifting box lay section having two shuttle boxes. A picker rod is mounted upon the box lay section beneath each shuttle box in accurate parallelism with the raceway, the picker rod 1 being shown beneath the front shuttle box and the picker rod 72 beneath the rear shuttle box. The bottom of each shuttle box and the box lay section therebe neath is provided with a slot such 78 and 74 extending therethrough and normal ther to in parallelism with the a corresponding picker rod. Pickers 75 and76 are provided for each shuttle box. These pickers at their lower ends slide on the respective rods 71 and 72, extend vertically upward through the re spective slots 73 and 74 and have their heads opposite the shuttle noses. Consequently it will be seen that as these pickers are guided in accurate parallelism with the raceway, they will, when moved, have no tendency to deflect the shuttle from a path accurately parallel with the raceway during the picking movement and will thus insure accuracy of the travel of'each shuttle across the lay.

from such a path.

The lay rock shaft 2, as already noted, is provided with the shoe 19 journallet thereon between the hub 20 and the collar 22 and swinging with the box lay section. This shoe at its outer end is provided with the upper face 7? on which rests the rocker T8 to which is rigidly secured in the usual manner, as by the bolt 79, the picker stick 80. The lower face 81 of the rocker 78 is curved longitudinally in the usual manner so that as it rocks on the face 7'? of the sh e, the upper end of the picker stick will move in a substantially horizon pat-h. But in the present invention the picker stick rocks transversely with respect to the shoe and the face 81 of the rocker is curved transversely alsotopermit this rocking movement. lVhile the upper face of the shoe is illustrated as and parallel with the rock shaftand the lower face of the rocker as curved both longitudinally and transversely, it is suiiicient that these cooperating faces be relatively curved both longitudinall and transversely permit the ,per effective end of the picker stick move in substantial parallelism with the rock shaft in e' I the transverse pluralities of tions required for its cooperation with e pickers. The usual tongue 82 is shown on ncing u from the shoe 19 th: ough slot in the rocker 7 8. At its upper the picker stick is provided with pins 88 extendin transversely from either side and engageabie with slots in the pickers so that as the picker stick is swung transversely with respect to the box lay section one pin will be brought into engagement with the picker for the active shuttle and the other pin will be withdrawn from engagement with the picker of the inactive shuttle.

p A guide is provided for the upper portion of the picker stick extending parallel with the raceway and mounted on the box lay section to.move transversely thereof and thus shift the picker stick from he picker of the inactive to the picker of the active shuttle and, as already pointed out, this guide is moved transversely upon the movement of the box lay section with respect to the main lay section. This guide is shown as comprising a pair of parallel bars 85 and 86 secured at their ends by bolts 87 in spaced relation and between which the picker stick swings. The inner surfaces of these bars are formed on a convex curve so that both bars may maintain a light contact with the picker stick in all positions. At each end one of the bars, as 85, is provided with upstanding arms 88 journalled on an axis extending parallel with the raceway. The outer arm 88 is shown as journalled to a bracket 89- depending from the outward end of the b0); lay section, while the inner arm is journalled on a stud 90 secured to and projecting from the flange 32 of the box lay section. In the construction illustrated, the outer arm 88 forms a portion of a bell crank lever having an arm 91 projecting rearward. A link connects the arm 91 with an arm projecting radially from and secured to the lay rock shaft 2 and these parts are so proportioned that as the box lay section is shifted with respect to the main lay section to shift the shuttles, the picker stick guide will be rocked to shift the aicker stick from one picker to another. The link is shown as comprising a rod 92 threaded at its ends into turnbuckles 93 and at whereby it may readily be adjusted. The upper turnbuckle 93 is pivoted by the bolt to the arm 91, while the lower turnbuckle 04 is pivoted to the arm secured to and projecting from the lay rock shaft. This latter arm is so constructed as to form a give-way connection which will prevent smash if, for example, the picker is not in position when the picker stick is shifted by the guide. This construc' tion is shown more in detail in Fig. 5. A bifurcated member 96 projects radially from the hub 20 already described as secured to the lay rock shaft- 2 by the set screw 21. The bifurcations 97 of this member are each bifurcated transversely at their ends and provided with journal pins 98. A V-shaped member 99 has its free ends recessed to it over the pins 98 and is pivoted at its center at 100 to the turnbuckle 9 A coiled spring 101 is secured atone end to the member 99 and at the other end to the member extending between the bifurcations 92'. This spring under normal conditions holds the members 90 and 96 together as a single arm projecting from and secured to the rock shaft. If, however, the upper end of the picker stick is restrained from swinging, the slotted guide is also re strained from swinging, the link 92 is held against movement and consequently as the shaft 2 rocks, the member 96 gives way, swinging about one of the pins 98 and elongating the spring 101.

The swinging movements of the picker stick in the picking and shuttle checking operations may be secured by any suitable means and are herein shown as secured by a generally old type of means, except that in this specific form of the invention the latter portion of the return movement of the picker stick is positively effected so as to insure alignment of the pickers with the picker stick when the picker stick shifts from one picker to another. In the construction illustrated, the picker stick is yieldingly swung outwardly by the usual strap 102 secured thereto .and extending down through the shoe to the drum 103 yieldingly wound up by the usual spring 104; and mounted on the stud 105 beneath the shoe. The pick motion is shown as comprising the usual pick cam 106 on the shaft 8, the pick shaft 107 journalled on the loom frame having one arm 108 provided with a piok'ball or tappet 109 running on the cam 106 and the other or pick arm 110 connected to the usual lug strap 111 extending to the picker stick. In this case, however, the lug strap at its inner end presents a shoulder 112 abutting the inner face of the picker stick. A cam plate 113 is also mounted on the iick cam 106 by means of the bracket arms 114 so as to extend at a distance equal to the diameter of the pick ball 169 from the periphery of the pickcam 106 throughout that portion thereof that controls the final outward or return movement of the picker stick. Thus it will be seen that not only is the picker stick given its usual picking movement, but it is positively returned at the outer end of its return movement, thus insurin g proper alignment of the pins 83 with the lots 84 in the pickers at all times when a shift may occur. 7

A picker stick check of a usual type is illustrated comprising a flexible loop member 115 sliding in the bracket 116 against suitable friction and acting to check the movement of the picker stick.

A suitable protector mechanism is provided f a generally familiar type to stop the loom in case the active shuttle is improperly boxed. This mechanism is shown as comprising protector fingers 11'. and 118 cooperating respectively with the binders 15 and 16 fulcrume'd respectively at 119 and 120 on the flange 32 of the box lay section. Suitable springs 121 hold these protector lingers in engagement with the binders. An arm 122 extends rearward'from thefinger 117 and a 'similar'arm 123 extends forward from the protector finger 118. W hen the box lay section is shifted, the arm 122 or 123 of the protector finger for the shuttle box shifted into active position is moved beneath a lug 124 extending from the usual dagger 125 pivoted to the main lay section. Consequently whichever shuttle box may be in active position, if the active shuttle is improperly boxed,

this dagger will be allowed to drop and effect the stopping of the loom in a manner well known to those sk1lled 1n the art.

- The 11V6I1l31011 also provides for the accurate assembly and adjustment of the shuttle boxes on the box lay section and the shuttle gulding throat on the main lay section so that these elements willcooperate accurately, be

adaptable to variations in the size of the shuttles'and insure proper alignment after each shift of the shuttle boxes. Certain spe clfic constructions for specifically securing these and other associated features of the invention are shown on a larger scale in Figs. 6 to 8, inclusive. a

The rear wall member 14 is transversely adjustable on the box lay section 11 by means of bolts 126 extending through slotted lugs 12'? of the wall member and into the section. A similar transverse adjustment is provided for the front wall member 13 in this case by means of cap screws 128 extending up through slots in the section 11 into a flange of the wall member. It is desirable that the central wall member indicated as a whole at 12 should have each wall surface adjustable transversely so that each shuttle box may be made of the desired width. For this purpose this wall. member 12 is made in two longitudinal sections 129 and 130 having their abutting ends bevelled as at 131 and 132 and one set of bevelled ends as at 132 being serrated. Thus by shifting these sections longitudinally, the width of the central wall member 12 as a whole is adjusted transversely. Suitable bolts 133 extending transversely through slots in the two sections act to secure them together in adjusted position. Then the member 12 is secured to the lay section by bolts 134 passing through enlarged openings therein and thence into the lay section. Thus there is provided a simple means for adjusting the width of the central wall member 12 and therefore of each of its wall surfaces with respect to the opposed wall surface on the members 13 and 14 and then for securing the central wall member in position on the lay section. I

. The shuttle guiding throat already referred to having the top wall 67, the front wall 69 and the rear wall also contains in its preferred form certain features such as shownin Figs. 6 and 7. Therein the top and rear walls 67 and 70 are formed of one piece of metal having a base 135 with bevelled edges 136 set into a bevelled edge recess in the standard 137, which forms the upper end of the sword 3 and which supports the reed 4, and is locked in place by a belt 138. The front wall. 69 of the shuttle guiding throat is adjustably secured in place to the main lay section by bolts 139 extending through enlarged openings therein into the lay section. The face of this member is also preferably covered at least throughout its main portion with a leather facing 140.

It is desirable that means should be pro vided for insuring that the shuttles be well within their boxes whenever the box lay section shifts with respect to the main lay sectien' and forthatpurpose the ends of the shuttle guiding throat are curved to push back into the box any shuttle projecting slightly therefrom. For this purpose the rear wall 70 is shown curved at 141 and the front wall isprovided with an end section 142 longitudinally adjustable on the main section by means of a bolt-143 and the cooperatingserrated faces 14 4. This end section 142 also presents a curved face 145 which may thus be accurately positioned to assist in pushing back any slightly mis positioned shuttle.

Further to assist in the accurate alignment of eachshuttle box with the raceway when shifted into position to align therewith, an adjustable stop feature is provided shown III in the preferred construction in Fig. 8. Herein the main lay section is provided at the rear with a bracket plate 146 secured thereto and at the front with a similar plate 147 secured thereto behind the flanged bracket 33. These plates project outwardly beneath the overhanging portion of the box lay section 1i and are each provided with transversely adjustable stop screws 148 and 149, respectively, held in adjusted position by suitable lock nuts 150. The box lay section has integral therewith and extended between these stop screws a lug 151. Consequently it will be seen that by adjusting the stop screws so that the lug 151 will contact therewith when the corresponding shuttle box is in alignment with the shuttle throat, the accuracy of such alignment will be maintained under all conditions.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

1. A loom comprising a lay having a main section with a raceway and a transversely shiftable box section, a plurality .of shuttle boxes on the box lay section, any one of which may be aligned with the raceway by shifting the said section, a picker rod for each box mounted upon the box lay section in parallelism with the raceway, a picker slidable on each picker rod, and means for effecting the picking movement of each picker when its shuttle box is aligned with the raceway, whereby under all conditions the active shuttle is projected in a straight line parallel with the raceway.

2. A loom comprising the construction defined in claim 1, in which the bottom of each shuttle box and the box lay section therebeneath has a slot extending therethrough and normal thereto in parallelism with the corresponding picker rod for guiding the upper part of the corresponding picker.

3. A loom comprising the construction delined in claim 1, in which the main lay section is provided at its end adjacent the shiftable box section with a single shuttle guiding throat with which any one of the shuttle boxes cooperates when brought into alignment with the raceway.

d. A loom comprising a lay having a main section with a raceway and a transversely shiftable shuttle box section, a single shuttle guiding threat at the end of the raceway on the main lay section, and a plurality of shuttle boxes on the box lay section, any one of which may be aligned wit-h the said throat and the raceway by shifting the box lay section, the

width of the throat and of each shuttle box being substantially the same so that the throat acts to guide the shuttle accurately into the box aligned therewith.

5. A loom comprising a lay having a main section with a raceway and a transversely shiftable shuttle box section, a single shuttle guiding throat at the end of, the raceway on the main lay section, a plurality of shuttle boxes on the box lay section, any one of which may be aligned with the said throat and the raceway by shifting the box lay section, the adjacent ends of the main and box lay sections each presenting extended smooth abutting faces, and means extending through and holding said faces in contact while permitting the shifting movement of the box lay section.

6. A loom comprising a lay having a main section with a raceway and a transversely shiftable box lay section, the said main and box lay sections having their adjacent ends each presenting extended smooth abutting faces, means extending through and holding said faces in contact while permitting the shifting movement, and a plurality of shuttle boxes on the box lay section, any one of which may be aligned with the raceway by shifting the said section.

7. A loom comprising a lay rock shaft, a main lay section having a raceway supported by and swinging with said shaft, a shuttle box lay section supported to swing with, and with respect to, the main lay section, a plurality of shuttle boxes on the box lay section, any one of which may be aligned with the raceway by shifting the said section, means for swinging the main lay section and therewith the box lay section, means for swinging the box lay section at predetermined times with re spect to the main lay section to shift either shuttle box thereon as required into alignmentwith the raceway, and a picker stick carried by the lay rock shaft mounted to swing longitudinally of the shaft to effect the picking movement and also to swing transversely with, and with respect to, the box lay section to cooperate with the active shuttle.

8. A loom comprising a lay rock shaft, a main lay section having a raceway supported by and swinging with said shaft, a shuttle box lay section supported to swing with, and with respect to, the main lay section, a plurality of shuttle boxes on the box lay section, any one of which may be aligned with the raceway by shifting the said section, means for swinging the main lay section and therewith the box lay section, means for swinging the box lay section at predetermined times with respect to the main lay section to shift either shuttle'box thereon as required into alignment with the raceway, and a shoe on the lay rock shaft, a picker stick having a rocker resting on the shoe, and means for swinging the picker stick in parallelism with the rock shaft to effect its picking movement and for swinging the picker stick transversely of the rock shaft to cooperate with the active shuttle.

9. A loom comprising a lay rock shaft,'a main lay section having a raceway supported by and swinging with said shaft, a shuttle box lay section, a plurality of shuttle boxes on the box lay section, any one of which may be aligned with the raceway by shifting the said section, means for swinging the main lay section and therewith the box lay section, means for swinging the box lay section at predetermined times with respect to the main lay section to shift either shuttle box thereon as required into alignment with the raceway, and a shoe on the lay rock shaft, a picker stick having a rocker resting on the shoe, the cooperating facesof the shoe and rocker being relatively curved both longitudinally and transversely to permit the upper effective end of the picker stick to move in substantial parallelism with the rock shaft and thereby with the lay during its picking movement when coopcraitng with either active shuttle, and means for swinging the picker stick in parallelism with the rock shaft to effect its picking movement and for swinging it transversely of the rock shaft to bring it into cooperation with the active shuttle.

10. A loom comprising a lay rock shaft, a

main lay section having a raceway supported by and swinging with said shaft, a shuttle box lay section, a plurality of shuttle boxes on the box section, any one of which may be aligned with the raceway by shifting the said section, means forswinging the main lay section and therewith the box lay section, means for swinging the box lay section-at predetermined times with respect to the main lay section to shift either shuttle box there-- on as required into alignment with the raceway, and a shoe on the lay rock shaft, a picker stick having a rocker resting on the shoe, the upper face of the shoe being flat and parallel with the rock shaft and the cooperating faceof the rocker being curved both longitudinally and transversely to, permit the upper effective end of: the picker stick to move i1 substantial parallelism with therock shaft and thereby with the lay during its picking movement when cooperating with either ac tive shuttle, and means for swinging the picker stick in parallelism with the rock shaft to effect its picking movement and for swinging it transversely of the rock shaft to bringit.

into cooperation with the active shuttle.

11, A loom comprising a lay rock shaft having a shoe, a picker stick having a rocker resting on the shoe, the cooperating faces. of the shoe and rocker being relatively curved both longitudinally and transversely to permit the upper efi ective end of the picker stick to more insubstantial parallelism with the rock shaft in either of a transverse plurality of positions, and means for swinging the picker stick in parallelislnwith the rock shaft to effect its pickin movement and for shifting the upper end of the picker stick transversely of the rock into either of a plurality of transverse positions. I

I 12. loom com rising a lay rock shaft a in a shoe a ick r sti k. avin a c r shiftable box section,

resting on the shoe, the upper face of the shoe being flat and parallel with the rock shaft and the cooperatin face of the rocker being curved both longitudinally and transversel' to permit the upper effective end of the picker stick toinove insubstantial parallelism with the rock shaft in either of a transverse plurality of positions, and means for swinging the picker stick in parallelism with the rock shaft to effect its picking movement and for the raceway, a picker slidable on each picker rod, a single picker stick shiftable transversely into engagement wlth the plcker of the actlve shuttle and out of engagement with the picker of the inactive shuttle,and means for ef ecting the picking movement of the picker stick.

14. A loom comprising a lay having a main section with a raceway and a transversely shiftable box section, two shuttle boxes on the box lay section, e'thcrof which may be aligned with the raceway by shifting the box lay section, a picker rod for each box mounted on the box lay section in parallelism with the raceway, a picker slidable on each picker rod, a single picker stick mounted to cause its upper end to move in parallelism with the raceway during its picking movement and between the pickers, means for effecting operative engagement of the picker stick with the picker of the active shuttle anddisengagement from the picker of the inactive shuttle, and means for efiecting the picking movement of the picker stick.

1.5. A loom comprising a lay having a main section with a raceway and a transversely two shuttle boxes on the box lay section, either (of which maybe aligned with the raceway by shifting the box lay section, a picker rod for each box mounted on the box lay section in parallelism with the raceway, apickerslidable on each picker rod, a single picker stick mounted to cause its upper end to move in parallelism with the raceway during its picking movement and between the pickers, a pin extending transversely from each side of the picker stick at its upper end, a slot in each picker cooperating with the corresponding pin, means for shifting the picker" transversely with respect to the box-lay sec-- tion to cause one pin to engage the slot in the picker of the active shuttle and the other pin to disengage the slot of the picker of the inactive shuttle, and means for effecting the picking movement of the picker stick.

Inc

16. A loom comprising the construction delined in claim 13, together with a guide for he upper portion of the picker stick extending parallel with the raceway and mounted on the box lay section to move transversely thereof, and m ans acting upon movement of the box lay ion with respect to the main lay section to move the guide transversely and swing the picker stick into cooperation vith the picker of the active shuttle and out of cooperation with the picker of the inactive shuttle.

17. A loom comprising a lay having a raceway, a plurality of shuttle boxes at one end of the lay transv rsely shiftable to bring either into alignment with the raceway, a picker mechanism including a picker stick effective to cooperate with either shuttle box when in alignment with the raceway, and a pick motion acting to effect both the icking movement of the picker stick and the latter portion of its return movement thus to insure proper positioning of the picker mechanism when the boxes shift.

18. A loom comprising a lay having a raceway, a plurality of shuttle boxes at one end of the lay transversely shiftable to bring either into alignment with the raceway, a picker mechanism including a picker stick efiective to cooperate with either shuttle box when in alignment with the raceway, and a pick motion including a driven cam and a pick arm connected to the picxer stick and rocked by the cam in one direction to e-Eect the picking movement of the picker stick and also rocked by the cam in the opposite direction during the latter part of its return movement thus to insure proper positioning of the picker mechanism when the boxes shift.

19. A loom comprising a lay having a raceway, a plurality of shuttle boxes at one end of the lay transversely shiftable to bring either into alignment with the raceway, a picker mechanism including a picker stick efiective to cooperate with either shuttle box when in alignment with the raceway, and a pick motion acting to effect the picking movement of the picker stick and including means for positively efiecting the later portion of the return movement of the picker stick thus to insure proper positioning of the picker mechanism when the boxes shift.

20. A loom comprising a lay rock shaft, a main lay section having a raceway supported by and swinging with said shaft, a shuttle box lay section, a plurality of shuttle boxes on the box lay section, any one of which may be aligned with the raceway by shifting the said section, means for swinging the main lay section and therewith the box lay section, means for swinging the box lay section at predetermined times with respect to the main lay section to shift either shuttle box thereon as required into alignment with the raceway, the adjacent ends of the main and box lay section presenting extended smooth abutting faces and means extending through and holding said faces in contact while permitting the swinging movement of the box lay section.

21. A loom comprising a lay rocx shaft, a main lay section having a raceway supported from and swinging with said shaft, a shutto box lay section supported from and swing ing with, and with respect to, said shaft, two shuttle boxes on the box lay section, either of which may be aligned with the raceway by shifting the said section, means for swinging the main lay section and therewith the box lay section, means for swinging the box lay section at predetermined times with respect to the main lay section to shift either shuttle box thereon as required into alignment with the raceway, a picker for each box slidable longitudinally on the box lay section, a single picker stick supported on the lay rock shaft, means for swinging the picker stick transversely into engagement with the picker of the active shuttle and out of engagement with the picker of the inactive shuttle, and means for effecting the picking movement of the picker stick.

22. A loom comprising a lay rock shaft, a main lay section having a raceway supported by and swinging with said shaft, a shuttle box lay section supported by and swinging with, and with respect to, said shaft, two shuttle boxes on the box lay section, either one of which may be aligned with the raceway by shifting the said section, means for swinging the main lay section, a lever fulcrumed on the main lay section having one arm engaging the box lay section to shift it in either direction and having its other arm provided with a follower, a cam member mounted for bodily movement between two positions on the loom frame and having a groove for said follower, means for shifting the cam member from one position to the other as required to shift the shuttle boxes, the cam follower riding in the groove of the cam member during the swing of the main lay section to prevent swinging movement of the box lay section relatively thereto when the cam member is in either of the said positions, the follower bearing against one wall of the groove when the cam member is in one position and against the other wall when the cam member is in the other position and each of said walls, when in the said positions, being concentric with the axis of the lay rock shaft.

23. A loom comprising a lay rock shaft, a lay having a main section with a raceway and a transversely shiftable box section, two shuttle boxes on the box lay section, either of which may be aligned with the raceway for shifting the box lay section, a picker for each box slidable longitudinally thereof, a single picker stick mounted to cause its upper end to move in parallelism with the raceway during its picking movem ent and between the pickers, a guide for the upper portion of the picker stick extending parallel with the raceway and mounted on the box lay s'ection to move transversely thereof, means actmg upon movement of the box lay section with respect to the main lay section to move the guide transversely and swing the picker stick into cooperation with the picker of the active shuttle and out of cooperation with the picker of the inactive shuttle, and means for effecting the picking movement of the picker stick.

24. A loom comprising the construction defined in claim23, in which the said guide is pivoted on an axis parallel-with the race way and is provided with a projecting arm, a second arm projecting from the lay rock shaft and a link connecting said arms to effect the said transverse movement of the guide when the box lay section is swung with respect to the main lay section.

25. A loom comprising the construction defined in claim 23, in which the said guide is pivoted on an axis parallel with the raceway and is provided with a projecting arm, a second arm projecting from the layrock shaft, a link connecting said arms to effect. the said transverse movement of the guide when the box lay section is swung with respect to the main lay section, and a give-way element in the said connections between the guide and the lay rock shaft.

26. A loom comprising a lay having a main section with a raceway and a. transversely shiftable box section, a plurality of shuttle boxes on'the box lay section, any one of which may be aligned with the raceway by shifting the said section, a single picker stick, a guide for theupper end of the picker stick mounted in parallelism with the raceway on the box lay section, means for transversely shifting said guide when the box lay section is shifted to shift the picker stick into cooperation with the active shuttle, and means for swinging the picker stick longitudinally of the raceway in each of its transverse positions.

27. A loom comprising a lay having a main section with a raceway and a transversely shiftable box section, a plurality of shuttle boxes on the box lay section, any one of which may be aligned with the raceway by shifting the said section, a single picker stick, a guide for the upper end of the picker stick pivotally mounted on the box lay section on an axis parallel with the raceway,

, means acting upon the movement of the box lay section with respect to the main lay section to swing the guide transversely and swing the picker stick into cooperation with the active shuttle and out of cooperation with an inactive shuttle, and means for effecting the picking movement of the picker stick.

28. A loom comprising the construction defined in claim 27, in which the guide is composed of a pair of members extendingparallel-to the raceway and between which the pickergstick swings, the. inner surfaces, of which members are convex so thatboth may maintain guidmg contact with the pick er stick. in all positions.

29. A loom comprising the construction defined in claim 13, together withmeans controlled by the relative movement between the f main lay section and the box lay section acting to effect thetransverse shiftof the picker stick.

3,0,,A loom comprising a lay having av main section with a raceway anda transs; verselyshiftable box section, two shuttle boxes on the box lay section, either of which maybe aligned with the raceway by shifting.

the .box lay section, a single picker stick shiftable transverselyv into cooperation with the active shuttle and out of cooperation with the inactive shuttle, andmeans forefi'ecting the picking movement of thepicker stick.

81. A loom comprising the construction defined in claim 30, together with means for positivelyeifecting the latter portion of the stops on one section and a lug extending from theother section between saidstops for limiting the relative transverse. shift of the said lay sections. .4 A

.33. A loom comprising .a lay having a main section with .a raceway'and atransversely shiftable shuttle box section, a single,

shuttle guiding throat at the end of the raceway on the main lay section, a plurality of shuttleboxes on the box lay section, any

one ofwhich may bealigned with the said.

throat and the raceway by shifting the box lay section, the shuttle guiding throat pref; senting a front wall and a back wall each Io's I'ID

curved outwardly and acting .upon the shift I of the boxsection to engage the nose of a intoits box.

3 L. vA loomicomprising a lay havingfa main section with a raceway and a; transversely shiftable shuttle box section,a single shuttle guiding throat at the end of the raceway on the main lay section, a plurality'of'shuttle boxes on the box lay section, anyone of which may be aligned with thesaid throat and the raceway by shifting the box lay section, the shuttle guiding throat presenting a rear wall said wall in adjusted position.

slightly mispo'sitioned shuttle and force it 35JA" loom comprising a lay having a main section with a raceway and a transv'ersely shiftable shuttle box section, a single shuttle guiding throat at the end of the racea way on the main lay section having a front wall comprising a main section and an outer end section, means for longitudinally adjusting the said wall sections with respect to each other'and for locking the same in adjusted position, and a plurality of shuttle boxes on the box lay section, any one of which may be aligned with the said throat and the raceway by shifting the box lay section. I

36. A loom comprising a lay having a main-section with a raceway and a transversely shiftable shuttle box section, a single shuttle guiding throat at the end of the raceway on the main lay section having a front wall comprising a main section and an outer end section having an outwardly curved shuttle'engaging and positioning face, means for longitudinally adjusting the said wall sections with respect to each other and for locking the same in adjusted position, and'a plurality of shuttle boxes on the box lay section, any one of which may be aligned with the said throat and the raceway by shifting the box lay section. V

37. A shifting shuttle box loom comprising a lay, two shuttle boxes on the lay separated by a central Wall member in which the said member is composed of two parallel transversely adjustable sections, means for securing said transversely adjustable sections in adjusted position and means for securing said member when thus adjusted to the lay. r

38. A shifting shuttle box loom comprising the construction defined in'claim 37, in which the two sections of the central wall member have their adjacent and opposite ends bevelled to provide for the relative transverse adjustment thereof.

39. A loom comprising a lay rock shaft, a main lay section having a raceway supported by and swinging ,Wltll said shaft, a shuttle box lay section, a plurality of shuttle boxes on the box la section, any one of which may be aligned with the raceway by shifting the said section, means for swinging the main lay section'and therewith the box lay section, means forswinging thebox lay section at predetermined times with respect to the main lay section to shifteither shuttle box thereon as required into alignment with the raceway, the said means for swinging the box lay section including a give-way connection acting to prevent a smash if the box lay section is held against movement when said means comes into action.

40. A 'loom' comprising a lay having a main section with a raceway and a transversely shiftable shuttle box lay section, a plurality of shuttle boxes on the box lay section, any one of which may be aligned with the raceway by shifting the box lay section and means for shifting the box lay sectionincludingf agive-way connection acting to re vent'a smash if the box laysection is eld against movement when said means comes into action.

name to this specification.

CARL D. BROWN. 

